Revolving self-dumping leveler



J. M. CONLEY.

Patented Apr. 5, 1921.

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JOHN M. CONLEY, 0F STOCKTON, CALIFORNIA.

REVOLVING SELF-D'UIVIPING LEVELER.

Specification of Letters Patent.

Patented Apr. 5,1921.

Application filed January 10, 1920. Serial No. 350,563. 7

To all whom it may concern: 7

Be it known that I, Joan M. CoNLnY, a citizen of the United States residing at Stockton, in the county of man Joaquin,

State of California, have invented certain new and useful Improvements in Revolving Self-Dumping Levelers; and I do declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this application.

This invention relates to improvements in,

land levelers or scrapers, and particularly to a type preferably drawn by a tractor.

The principal object of the invention is to without any great physical effort on his part.

A further object of the invention is to provide a scraping member with a double or opposed scraping edge, so that not only will the weight of the metal parts be counterbalanced, but the scraping member will give twice the service of a single blade member.

A further object of the invention is to produce a simple and inexpensive device,

and yet one which will be exceedingly effective for the purposes for Which it is designed.

These objects I accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views. j

Figure 1 is a perspective elevation of the leveler. r v

Fig. 2 is an enlarged fragmentary side view of a positioning-lock means.

Fig. 3 is a cross section taken on a line 3-3 of Fig. 2, showing the adjustable bearin box. v

lteferring now more particularly to the characters of reference on the drawings, the numeral 1 denotes the side frames of the scraper, preferably a rigid built-up iron structure, and provided with bottom runners 2. Cross beams 3 are provided at the upper ends to maintain the frames in spaced'relations.

Fixed vertically to the frames on the outside and substantially central thereof are slotted bearings A: in which boxes 5 are mounted for verticaladjustment, such adjustment being effected by set screws 6 bearme; against the boxes. v

Turnable in the boxes and projecting therethrough is ,a shaft 7 to which is fixed between the frames 1 a plurality of double: -armed spiders 8, having opposed flat faces to which scraper plates 9 are secured, which extend from side to side between the frames.

That is, one such plate is positioned to one side of saidshaft while the otherprojects in arallel planes.

ne of these plates at a time is adapted to project a short distance below the ground when angled forwardly, the lower edge of. such plate being curved forwardly somewhat as at 9 so as tov form a kind of scoop.

Adjacent the shaft 7, the plates bend away therefrom substantially at right angles thereto, to form overhanginglips or deflector plates 10.

Extending across the front end of the frames, beingsecured to the cross beam 3, is another plate 11 which projects horizontally toward the rear to a point where the scraper plates will just clear the same when they turn about thefshaft.

from the other side, so that both plates are r The purpose of hese plates 10 and 11 to prevent to a certain extent'the dirt from working out over the edges when a full load is being transported for dumplng,

A rigid drawbar structure 12 V s fixed to the forward end of the frames near the,

ground, being adapted for connection to the frame 13 of a tractor. V I 1 Fixed to the outer end of the shaft 7 on one side is a ratchet wheel 14, while turn ably mounted on the shaft adjacent said wheel is a lever 15 having a pawl 16 adapt ed to engage theteeth of the wheel, the teeth pointing to the rear at the point of engagement of the pawl therewith.

This lever is normally pulled back by a spring 17 secured thereto and to the frame 1, while a cable 18 extends forwardly to the tractor to be within easy reach of the driver thereof; j K ,7

Fixed to the other end of the shaft 7 is a notched wheel 19 having four spaced pairs of peripheral notches or recesses 20, two corresponding pairs being positioned relative to one of the plates 9, and'the other two pairs similarly positioned relative to the other plate.

A bell crank 21 is pivotally mounted to the frame 1, the lower end of such member forming a pawl 21 adapted to engage any one at a time of the notches 20, being normally kept in engagement therewith by a spring 22.

A cable 23 extends from the top of the member 21 to the driver of the tractor.

The notches 2O face in the opposite direction from the ratchet teeth of the member 14:, so that when the cable 18 ispulled, the pawl 16 engages the teeth, whereas when the cable 23 is pulled, the pawl 21 is disengaged from the teeth. a

Inasmuch as the entire strain of the scraping is carried by the members 19 and 21. they must naturally be of very rigid and substantial construction.

In operation one of the scraper blades is normally positioned with its lower edge below the level of the runners, as stated.

This position is maintained during the forward movement ofthe device, by the pawl 21f engaging with notch A.

If it is desired to transportthe load 7 some distance before dumping the same, the

tractor is backed up slightly, which will cause the scraper blade to come to the level of the runners, turning somewhat on the shaft 7 to do this. 4 The pawl 21 then engages notch ,B, and when the tractor again moves forward, the blade 9 will maintain the position thus had.

When it is desired to dump the load, the cable 23 is pulled, thus releasing the mem ber 19 and the shaft 7 secured thereto,

7 which will cause the lower edge of the the pawl 21 scraper plate to bite into the ground and hold there while the framework of the scraper continues to move forward, the

plate of course tiltingabout' the shaft was an axls.

When in such dumped or upset position, the scraper may so be held indefinitely for transportation or otherwise, by reason of engaging either one of the two notches C, these two being close together so, that the plate maybe held two or-four inchesor thereabouts above the ground, as

' may be desired.

' To position the scraper for reloading,the

cable 23 is first pulled to release the pawl disposed scraper notch.

If desired, the lips 10 may be longer than shown, and project at a lesser angle to the plates 9, so that when the latter are reversely l angled to a leveling or distributing position, and working with wet dirt, the loadof dirt being distributed will be more or less broken up and retarded, soas to lessen the tendency of the wet mass to raise the plate 9 up and pass thereunder all at once.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfils the object of the invention as set forth herein.

While this specification sets forth in de tail the present and preferred construction of the device still in practice such deviations from such detail may be resorted to as do 7 not form a departure from the spirit of the invention, as'defined by the appended claims. Having thus described my invention what I claim-as new and useful and desire to secure by Letters Patent is f l. A scraper comprising a frame adapted to be drawn by a tractor, atransverse shaft turnably mounted in the frame but normally held against turning, a pair of oppositely disposed scraper plates secured to the shaft, one at a time being adapted to rest adjacent the ground, means controllable at will for permitting the shaft to turn whereby the scraper will automatically upset with the forward movement of the tractor, and means for then'turning the shaft in the same di-, rection, to position the other scraper plate for loading. I

2. A scraper comprising a frame adapted to be drawn by a tractor, a transverse shaft turnably mounted in the frame but normally held against turning, a pair of oppositely plates secured to the shaft, one at a time being adapted to rest adjacent the ground, a ratchet Wheel fixed to the shaft, a lever loosely mounted thereon, a spring normally pulling the same to the rear, a pawl on the leverengaging the ratchets and arranged to rotate the wheel with a means onthe other end of the mally preventing the same from being" turned.

In testimony whereof I affix my signature. JOHN M. CONLEY.

forward pull on the lever, and controllable I shaft fornor- 

